Bambu Lab Extruder Filament Sensor - X1 Series - alternative

Product Description

Original Extruder Filament Sensor – X1 Series is a replacement part for Bambu Lab X1 and X1 Carbon 3D printers. The sensor is integrated into the extruder body and serves for automatic detection of filament presence and detection of the filament cutter lever position. Thanks to this, the printer reliably recognizes when filament is loaded, when it has run out, or when cutting/exchange is taking place, thus minimizing the risk of failed prints.

The sensor is supplied as a complete kit for easy replacement – including mounting screws and glue. Installation is facilitated by the official Bambu Lab guide (Bambu Wiki) with step-by-step photos.

Key Features

• Original Bambu Lab replacement part for the X1 series
• Located in the extruder – detects filament presence in the print head
• Also detects filament cutter lever position for proper automatic exchange function
• Helps prevent printing without filament and other errors during the printing process
• Compatible exclusively with Bambu Lab X1 Series (X1, X1 Carbon)
• Simple replacement according to the official guide on Bambu Lab Wiki
• Everything needed in the package: sensor, BT2-5 mounting screws, and glue
• Compact package dimensions, low weight – also suitable as a "backup" part for service or makerspace

Use and Benefits

This sensor is crucial for reliable filament detection directly in the extruder. If a problem occurs with the sensor (for example, mechanical damage or detection errors), the printer may:

• report incorrect presence/absence of filament,
• fail during automatic material exchange,
• or print "empty" without actually feeding filament.

By replacing it with a new original Extruder Filament Sensor – X1 Series, you restore:

• correct filament loading detection,
• reliable stopping or warning upon feeding error,
• stable printer function during long and multi-material prints.

Package Contents

• 1× Extruder Filament Sensor – X1 Series
• 2× BT2-5 screw
• 1× glue for securing the part

Compatibility

• Bambu Lab X1 Series
  • X1
  • X1 Carbon (X1C)

This sensor is not compatible with Bambu Lab P1, A1, H2S series, etc. Different sensor variants are available for these models.

Technical Parameters

Installation and Recommendations

• Before replacing the sensor, turn off the printer and disconnect the power.
• Follow the official guide on Bambu Lab Wiki for the X1 Series.
• It is recommended to work in a clean environment and avoid getting dirt into the extruder.
• After installation, check the correct seating of the sensor and wiring and perform a filament loading test.

Who is the product suitable for

• Owners of Bambu Lab X1 / X1C printers who are dealing with filament detection problems.
• Service technicians and companies performing maintenance and repairs of Bambu Lab printers.
• Makers and professional users who want to have a spare sensor in stock to minimize downtime during a failure.

This original filament sensor for the X1 series extruder is a small but essential part for reliable and worry-free operation of your Bambu Lab X1/X1C.

Key features:

• Original extruder filament sensor for Bambu Lab X1 Series 3D printers (X1, X1 Carbon)
• Detects filament presence in the extruder and filament cutter lever position
• Prevents printing without filament and increases reliability of long prints
• Complete replacement kit – sensor, BT2-5 screws, and glue included
• Simple installation according to official guide on Bambu Lab Wiki
• Compact dimensions and low weight, also ideal as a spare part in stock